Welcome to SP!  -
Geyser Peak

Geyser Peak

Geyser Peak

Page Type: Mountain/Rock

Location: California, United States, North America

Lat/Lon: 38.76449°N / 122.84538°W

Object Title: Geyser Peak

County: Sonoma

Activities: Hiking

Season: Spring, Summer, Fall, Winter

Elevation: 3458 ft / 1054 m


Page By: Noondueler

Created/Edited: Nov 13, 2015 / Nov 17, 2015

Object ID: 959187

Hits: 1316 

Page Score: 80.49%  - 12 Votes 

Vote: Log in to vote



Walk-up road to Geyser Peak
Walk-up road to Geyser looking north
From the high points of the North SF Bay Area in Marin County 3 peaks stand out on the far horizon to the north. From right to left is hulking Mt. St. Helena and Cobb Mtn. for their height and Geyser Peak for its position. Geyser Peak sits on the western scarp of the Mayacamas Mountains above Alexander Valley about 13 miles northwest of Mt. St Helena and 5 miles northwest of Geyserville. A decent paved road goes up to a pass a few miles northeast of the peak. From here an easy walk-up road with open views leads to the summit with a 360 panorama if you walk the perimeter and ignore the commercial facilities. Views include Mt. Tamalpais on the horizon 60 miles south, Mendocino Nat. Forest peaks to the north, Konocti, Hannah, Cobb northwest and St. Helena to the southeast.

For more on peaks in the area: Bob Burd trip report.

Getting There

South from Geyser Peak
South from Geyser Peak
From Hwy. 128 in Alexander Valley take the Geysers Road 10 miles up to a pass and park off to the left beside the gate.


Gate at entrance to Geyser Peak
Entrance gate
Geyser Peak above Alexander Valley
Geyser Peak from the Geyser Road
Beyond the gate an easy rolling road with open views and a steep section at the end gets you to the summit with transmission towers. About 2 miles and 1,000' gain one way.

Red Tape

Facilities on the summit
Summit facilities
The facilities on the summit are corporately owned so private property issues should not be a problem.

When to Climb

Geyser Peak from the south
Geyser Peak south face
Year around. Gets hot in summer and could be snow in winter.


Southeast from the road to Geyser peak
Southeast view on the walk back
No camping in area.

Current weather and forecast

Click here for the Geyserville forecast.
Northwest from Geyser Peak
Northwest from Geyser Peak


Southeast from the road to Geyser PeakWalk-up road to Geyser PeakGeyser Peak from the eastNorthwest from Geyser PeakWest from Geyser PeakSouth from Geyser PeakMt. Tamalpais from Geyser Peak
Burnt out Cobb Mtn from Geyser Peak.South from Geyser PeakGeyser Peak above Alexander ValleyFacilities on the summitMt. Hannah from Geyser PeakGeyser Peak road view southGeyser Peak from the south
[ View Gallery - 2 More Images ]